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拟氨基多糖抑菌剂K3对烟草青枯菌的抑制作用研究

发表时间:2010-09-30  浏览量:1413  下载量:462
全部作者: 赵志峰,刘臻真,刘义新,昌珩,余夏薇
作者单位: 中国科学技术大学地球和空间科学学院
摘 要: 用实验室筛选的拟氨基多糖抑菌剂K3处理烟草青枯菌,从抑制率和室内毒力测定2个角度探讨其对烟草青枯菌的抑制效果。结果发现:1)K3浓度≥10 mg/L时,对烟草青枯菌的抑制率达到100%,即使青枯菌全部致死;K3浓度为5 mg/L时,对烟草青枯菌的抑制率为99.52%;即使K3浓度低至0.2 mg/L时,对青枯菌的抑制率仍然保持在44.74%;2)K3对青枯菌的EC5,EC50,EC95值分别为0.017,0.229,3.064 mg/L. 结果表明:拟氨基多糖抑菌剂K3对烟草青枯菌强烈的抑制作用,可望成为一种高效的烟草青枯病抑菌剂。
关 键 词: 植物保护学;拟氨基多糖抑菌剂K3;烟草青枯菌;抑菌作用
Title: Study on inhibition of glycosaminoglycan K3 to tobacco bacterial wilt (Ralstonia solanacearum)
Author: ZHAO Zhifeng, LIU Zhenzhen, LIU Yixin, CHANG Heng, YU Xiawei
Organization: School of Earth and Space Sciences, University of Science and Technology of China
Abstract: Ralstonia solanacearum were treated with glycosaminoglycan like compounds K3, a novel anti-bacterial agent, which had been screened by our laboratory. In order to explore the effect of K3 on R.solanacearum,inhibitory ratio was determined and indoor toxicity test was done. The results showed that: 1) R. solanacearum were all killed when the concentration of K3 was 10 mg/L or more. 99.52 % R. solanacearum were inhibited when the concentration of K3 reduced to 5 mg/L. Even when treated with 0.2 mg/L K3, the inhibitory ratio was still as high as 44.74%; 2) EC5, EC50, EC95 of K3 to R. solanacearum were 0.017, 0.229, 3.064 mg/L respectively. These results demonstrated that K3 had a strong inhibiting effect on R. solanacearum. Therefore, it has the potential to become a high effective anti-bacterial agent to tobacco bacterial wilt in field.
Key words: plant protection; glycosaminoglycan K3; tobacco bacterial wilt (Ralstonia solanacearum); bacteriostasis
发表期数: 2010年9月第18期
引用格式: 赵志峰,刘臻真,刘义新,等. 拟氨基多糖抑菌剂K3对烟草青枯菌的抑制作用研究[J]. 中国科技论文在线精品论文,2010,3(18):1880-1884.
 
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